Born to Run: A Hidden Tribe, Superathletes, and the Greatest Race the World Has Never Seen

Ireland Map (National Geographic Adventure Map, 3303)

United States, Northeast Map (National Geographic Adventure Map, 3127)

Acadia National Park Map (National Geographic Trails Illustrated Map, 212)

Yellowstone National Park Map (National Geographic Trails Illustrated Map, 201)

Lonely Planet Banff, Jasper and Glacier National Parks: Detailed Itineraries | Travel Like a Local | Insider Tips | Covers Banff, Jasper, Glacier, Waterton Lakes, and more (National Parks Guide)

A Walk in the Woods: Rediscovering America on the Appalachian Trail

Moon Best of Yellowstone & Grand Teton: Make the Most of One to Three Days in the Parks (Travel Guide)

100 Slopes of a Lifetime: The World's Ultimate Ski and Snowboard Destinations (100 of a Lifetime)

United States, Pacific Northwest Map (National Geographic Adventure Map, 3118)